Bearing for spindles for multiple drills.



E. BUSGH.

BEARING FOR SPINDLES FOR MULTIPLE DRILLS.

APPLICATION FILED MAR.25, 1910. 1,1 02,471 Patented July 7, 1914.

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THE NORRIS PETERS CO.. PHOTO-LITHQ. V/ASHINGTON. D.

E. BUSGH.

BEARING FOR SPINDLES FOR MULTIPLE DRILLS.

APPLICATION FILED MAR. 25, 1910.

1,102,471 Patented July 7, 1914.

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4* I I W 2i i 37? W I a THE NORRIS PETERS CO., PHOTO LITHOH WASHINGTON.D. C

tinrrn era PTNT @h lillmEt EDWARD BUSCH, OF DAYTON, OHIO, ASSIGNOR TOTHE NATIONAL AUTOMATIC TOOL COMPANY, OF DAYTON, OHIO, A CORPORATION OFOHIO.

BEARING- FOR SPINDLES FOR MULTIPLE DRILLS.

LIOZAWL Specification of Letters Patent.

Patented July 7, 1914.

Application filed March 25, 1910. Serial No. 551,520.

To all whom it may concern Be it known that l, EDWARD Busorr, a citizenof the United States, residing at Dayton, in the county of Montgomeryand State of Ohio, have invented certain new and useful Improvements inBearings for Spindles for Multiple Drills, of which the following is aspecification.

This invention relates to improvements in adjustable tool holders andmay be used as an attachment to multiple drills and particularly relatesto the adjustment of the drill holders and is adapted to insure a moreperfect alinement of the drills and a better method of maintainingdrills in their true vertical position than any heretofore known orused.

Referring to the drawings: Figure 1 is a side elevation of the machine.Fig. 2 is a central longitudinal section of the drill and its bracketand support. Figs. 3, 4i, 5 and 6 are detail views of the bracket anddrill support.

Like parts are represented by similar letters of reference in theseveral views.

Referring to Fig. 1, the bracket or rail, indicated by a, projects fromthe frame of the drilling machine and is adjustably supported in theusual and well known manner by having a slot a (see Fig. 5) formed inthe body of the rail and the bolts a (see Figs. 1 and 2) are adapted tohold said rail securely to the frame A of the machine. These bolts a areformed with the ordinary heads a which are adapted to fit within groovesor ledges a formed in the frame A and the shank of the bolts a projectdownwardly extending through the slot a in the body of the rail and nutsare then fitted onto the shank of the bolt for holding the rail a in anyadjusted position, it being apparent that the rail can be adjusted tothe desired position, and by tightening the nuts a said rail or bracketcan then be held in that adjusted position. This improvement relatesmore particularly to the means of connecting the drill support with saidrail or bracket. There is preferably formed in one end of the rail asocket b which is of inverted T-shape and within this socket there isadapted to be fitted the drill support 6 (see Figs. 3 and 4:). The shankof the drill support I) is formed in the shape of a T-rail such that thehead and web portion will be slidably mounted and dove-tailed within thesocket b. The free end of the drill support is formed with a bearing Z2for the spindles If. In assembling the parts, the drill support I) isplaced above the socket 7) such that the lower edge of the web and headof the support may be forced into the socket, the support beingthereafter slid downwardly until the drill is in proper position for itswork. The slots 0 and 0' preferably extend through the web portion of'the drill support and openings 0 extend through the side wall of thesocket b so that the bolts 0 (see Figs. 1 and 2) can be inserted in theopenings 0 passing also through the slots 0 and c. There is preferablyshown four openings extending through each wall of the socket Z), sothat four bolts may be employed in securing the drill support securelywithin the socket of the rail or bracket. The rail or bracket may bemade of any suitable material such as cast steel and by tightening thebolts 0 the support I) can be clamped in any desired position within thesocket Z). It is obviously desirable to form the socket and drillsupport such that a fairly tight fit will be made between the two partsand yet permit a slidable adjustment of the drill support within thesocket.

The spindle b is iournaled in the bearing if in the manner clearlyindicated in Fig. 2, though any usual or ordinary construction may beemployed. Some of the principal advantages of this construction are thatthe bracket or rail a can always be adjusted to such a position that therear wall of the socket 7) will occupy a perfectly true verticalposition and then by sliding the support Z) within the socket andapplying bolts 0 and tightening same until the drill support 6 is drivento a position that the rear wall of the drill support will fit tightlyagainst the rear wall of the socket, the parts will then be securelyheld in proper and desirable alinement. It is for this reason desirableto form the drill support so that the connective wall or edge betweenthe web and the head is slightly tapered or inclined and the socketformed of similar shape whereby the pressure exerted by the side wallsof the socket, whenever the bolts 0 are tightened, will force the drillsupport rearwardly into proper alinement with the rear wall of the railor bracket.

As appears clearly in Fig. 1 the usual flexible shafts are connected tothe spindles 72 thereby transmitting the power to the drills.

Having thus described the invention it is claimed as follows:

1. The combination of va rail, means for supporting the same, one end ofsaid rail being provided with a socket having resilient side Walls, adrill support, a shank on said support extending into the slottedopening of said rail, and means extending transversely acrosssaid'socket for releasably clamping the resilient side Walls of saidrail socket to said shank. s

2. The combination of a rail, means for supporting said rail, one end ofsaid rail being provided with a dove-tailed socket having resilient sideWalls, a drill support, said support having a shank shaped to conform tosaid socket and fitted therein, and means Copies of this patent may beobtained for five cents each, by addressing the Commissioner ofPatent-s,

for releasably clamping the sidewalls of said rail socket to said shank.

. 8. The combination of a bracket or rail, a stationary frame, means foradjustably securing said bracket to said frame, one end of saidbracketloeing provided with a socket having resilient side Walls, adrill support, the shank of said support being formed With slottedopenings, the side Walls of said socket having a plurality of openings,and means extending through the openings in said side Walls and saidsupport for clamping the side Walls against said shank of said Isupport.

In .testimonv whereof, I have set my hand i this 15th day of'March. a

a EDWARD BUsoH.

Witnesses:

P. N. SIGLER, EyG. DENLINGER.

Washington, I). e.

